CVE-2005-2100: The rw_vm function in usercopy.c in the 4GB split patch for the Linux kernel in Red Hat Enterprise Linux 4...

Security readout for executives and security teams

This is a local denial-of-service issue in Red Hat Enterprise Linux 4 kernel code. A user who already has local access could trigger a crash through improper bounds checking in the 4GB split patch code path. The source bundle does not show remote exploitation or data theft. Exposure is most likely limited to systems running affected Red Hat Enterprise Linux 4 kernels with the 4GB split patch. The provided affected-product metadata is incomplete, so asset confirmation should rely on Red Hat advisory and OVAL data. Treat this as a legacy availability risk, not an internet-scale emergency. Prioritize if RHEL4 systems still support critical operations or have many local users. If no RHEL4 assets remain, business exposure is likely low. Mitigation focus: Review Red Hat RHSA-2005:514 for applicable kernel updates.; Apply vendor-provided fixes where the advisory confirms applicability.; Limit local account access on potentially affected systems..

Prepared

Jun 29, 2026, 17:30 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.